Abrasive holder



. 28, 1937. E. v. CORFF ABRASIVE HOLDER Filed Sept. 6, 1935 2 Sheets-Sheet- 1 n% m0 m M Q 6 5 .3 e n d w E. V. CORFF ABRASIVE HOLDER Filed se t. e, 1935 2 Sheets-Sheet 2 Mines )4? i2 Patented Dec. 28, 1937 ABRASIVE HOLDER Edward V. Oorfi, Chicago, 111.

Application September 1 Claim.

My invention relates to abrasive devices and more particularly it relates to a device adapted for manual manipulation to sharpen cutlery and for use in abrasive contact with numerous other 8 articles. 7

The invention has as one of its objects the provision of an improved abrasive device of the kind described providing novel means for removal and renewal of the portion of the device providl ing the abrasive surfaces.

Another object of the invention is the provision of an improved abrasive device of the kind described which is inexpensive to manufacture, eflicient, durable and satisfactory for its intended 15 purpose.

Many other objects and advantages of the construction herein shown and described will be obvious to those skilled in the art from the description herein given.

To this end my invention consists in the novel construction, arrangement and combination of parts herein shown and described and more particularly pointed out in the claim.

In the drawings, wherein like reference char- 25 acters indicate like or corresponding parts:

Fig. 1 is a plan view of one form of an abrasive device embodying the principles of the invention; Fig. 2 is a view along the line 2-2 of Fig. 1; Fig. 3 is a view along the line 3-3 of Fig. 1; Fig. 4 is a view along the line 4--4 of Fig. 1;

Figs. 5, 6, '7, and 8 are, respectively, cross-sectional views of modified forms of the device shown *in Fig. 1;

Fig. 9 is a plan view of another alternative 35 form of a device embodying the principles of the invention;

Fig. 10 is a view along the line IIlIIl of Fig. 9; and

Figs. 11 and 12 are, respectively, cross-sectional 40 plews of modified forms of the device shown in Referring now more particularly to the drawings, the numeral I0 generally designates an elongated hollow member preferably formed of a thin sheet of metal-with one end arranged to form a handle piece H of elliptical or other suitable cross-section, the other end forming a member I 2 on which an abrasive sheet I3 is adapted to 50 be removably secured. The member I2 is preferably formed as shown in Fig. 4 wherein one edge is substantially semicylindrical and of the same curvature and in alignment with the corresponding edge of the handle piece II. The opposite 55 side walls of the member l2 are substantially 6, 1935, Serial No. 39,429

straight with their marginal edges closely spaced to form a narrow slit I4.

The abrasive sheet I3 has a length preferably slightly less than the length of the member I2 and a width in excess of the overall width of the .metal sheet forming the member IZ the excess in width being such that the opposite marginal edges I5 of the abrasivesheet project in to the hollow member in a substantial amount as shown. The abrasive sheet I3 is preferably mounted on the member I2 by first folding it to substantially the shape shown in Fig. land then placing the folded sheet over the open end of the member 7 with the marginal edges I5 projecting through the slit I4. The width of the slit I4 is slightly less than that of a-double thickness of the abrasive sheet I3 so that the edges- I5 are spring pressed together in the slit I4 by the resiliency of the side walls of the member I2. 7

The slit I4 is slightly inclined and'convergent towards the open end of the member I2, and, as a result, the sheet I3 is stretched laterally as it is drawn over the member I2 and insures a close, tight fit therewith. vThe described construction adapts the device for quick and easy removal for renewal of the abrasive sheets I3 as required.

In the modified forms of the device shown in plan in Fig. 1, the member I2 is shown in Fig. 5 as elliptical in cross-section; in Fig. 6 as substantially rectangular; in Fig. 7 astriangular,

and in Fig. 8 as circular. In each case, the contiguous edges of the sheet forming the member:

I2 are closely spaced to provide a slit I4 having a width less than a double thickness of the abrasive sheet I3 whereby the resilience of'the member I2 spring presses the marginal edges I5 in close fitting contact sufliciently to hold the sheet I3 in position and to permit its easy removal.

An alternative embodiment of the invention is shown in plan in Fig. 9 and in cross-section in Fig. 10,. as comprising a body member I5 of solid material and a handle member I6 fastened'to the body member in any suitable manner. The body member 15 may be constructed of wood or any suitable composition such as Bakelite and is shown in Fig. 10 as substantially circular in cross-section and as providing a longitudinal recess I9. A pair of curved plates I8 are. mounted in recesses provided for that purpose, onev on each side of the recess I9, with the outer peripheries of the plates forming a continuation of the curved surface of the body member. The plates 7 I8 are slightly resilient and their spacing is slightly less than a double thickness of an abrasive sheet 11. The side of a the member I8 on which the plates l9 are mounted converges perceptibly towards the center from the handle member towards the opposite end. The abrasive sheet [1 is mounted on the body member by tucking its longitudinal edges into the recess l9 at the outer end of the device with the sheet closely encircling the body member and then moving the sheet towards the handle member. The

plates l8 yield to permit the entrance of the double thickness of the sheet I! and the sheet is thereby caused to closely fit the body member and is held in position by the spring pressure of the plates.

In Fig. 11 the body member is shown as rectangular in cross-section and provided with a longitudinal recess 2| flanked on each side by a slightly resilient plate 22 fastened to the body member in any suitable manner. The adjacent edges of the plates 22 are spaced to receive and compress a double thickness of the sheet I! which is mounted on the body member in the same manner as described for the form shown in Fig. 10. The sides of the body member adjacent the recess 22 are also slightly convergent toward the body member from the handle outwardly.

In Fig. 12 the body member I5 is wedge-shaped in cross-section with one angular edge cut away. The sides of the body member adjacent the cutaway portion are bounded by plates 25 fastened thereto in any suitable manner with their edges converging and providing a space slightly less than a double thickness of the abrasive sheet H.

The sides of the body member |5 are also slightly tapered towards the outer end and the sheet I! is mounted on the body member with the longitudinal edges tucked into the space 24 bounded by the plates 25 and the body member. Upon moving the sheet I 7 to cover the body member, it is stretched taut and held in operative. position by spring pressure exerted by the plates 25.

Thus it will beseen that I have provided an improved abrasive device forming a mounting for removably securing abrasive sheets and novel means for securing the sheets in position and permitting their easy removal for renewal.

Having thus described my invention, it is obvious that various immaterial modifications may be made in the same without departing from the spirit of my invention; hence I do not wish to be understood as limiting myself to the exact form, construction, arrangement and combination of parts herein shown and described or uses mentioned.

What I claim as new and desire to secure by Letters Patent is:

An article of the kind described comprising an elongated hollow body member having one end forming a handle and the other end providing a slightly tapered surface uniformly convergent away from the handle, said tapered end having a narrowlongitudinal recess or open seam terminating in its smaller end, the side walls of the recessed portion being resilient and so spaced that opposite edge portions of an abrasive sheet may be inserted in the open end of the recess and the sheet drawn longitudinally over said tapered portion to a position wherein it is disposed about and closely fits said tapered surface with its in serted edge portions held in spring pressed engagement by the bounding edges of said recess.

EDWARD V. CORFF. 

